From 7bf8ff6cb13906737829c4aa2d64df287c5d990d Mon Sep 17 00:00:00 2001
From: xiaoiver <pyqiverson@gmail.com>
Date: Fri, 17 Apr 2026 17:24:14 +0800
Subject: [PATCH 1/3] fix: flipY in webgpu renderpass (#211)

---
 src/webgpu/RenderPass.ts | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/webgpu/RenderPass.ts b/src/webgpu/RenderPass.ts
index 659238a..76ae270 100644
--- a/src/webgpu/RenderPass.ts
+++ b/src/webgpu/RenderPass.ts
@@ -35,6 +35,7 @@ export class RenderPass_WebGPU implements RenderPass {
   private gfxColorResolveToLevel: number[] = [];
   private gfxDepthStencilAttachment: TextureShared_WebGPU | null = null;
   private gfxDepthStencilResolveTo: TextureShared_WebGPU | null = null;
+  private _viewportFlipHeight: number | undefined;
 
   constructor(private device: Device_WebGPU) {
     this.gpuColorAttachments = [];
@@ -205,6 +206,23 @@ export class RenderPass_WebGPU implements RenderPass {
     )
       ? getPlatformQuerySet(descriptor.occlusionQueryPool)
       : undefined;
+
+    // Viewport/scissor Y flip must use the active render target height. Using swapChainHeight
+    // for offscreen passes places the viewport outside the attachment (nothing draws).
+    const firstColor =
+      this.gfxColorAttachment.length > 0 ? this.gfxColorAttachment[0] : null;
+    const level0 =
+      this.gfxColorAttachmentLevel.length > 0
+        ? this.gfxColorAttachmentLevel[0] || 0
+        : 0;
+    if (firstColor !== null && firstColor !== undefined) {
+      this._viewportFlipHeight = Math.max(1, firstColor.height >>> level0);
+    } else if (descriptor.depthStencilAttachment) {
+      const ds = descriptor.depthStencilAttachment as unknown as Attachment_WebGPU;
+      this._viewportFlipHeight = Math.max(1, ds.height >>> 0);
+    } else {
+      this._viewportFlipHeight = this.device['swapChainHeight'];
+    }
   }
 
   beginRenderPass(
@@ -220,7 +238,8 @@ export class RenderPass_WebGPU implements RenderPass {
   }
 
   private flipY(y: number, h: number) {
-    const height = this.gfxColorAttachment[0].height;
+    const height =
+      this._viewportFlipHeight ?? this.device['swapChainHeight'];
     return height - y - h;
   }
 

From 6d118ff644b03bfe3de7c0ae22066416852b894a Mon Sep 17 00:00:00 2001
From: xiaoiver <pyqiverson@gmail.com>
Date: Fri, 17 Apr 2026 17:28:35 +0800
Subject: [PATCH 2/3] Fix flipy (#212)

* fix: flipY in webgpu renderpass

* chore: changeset
---
 .changeset/ten-cougars-live.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/ten-cougars-live.md

diff --git a/.changeset/ten-cougars-live.md b/.changeset/ten-cougars-live.md
new file mode 100644
index 0000000..64430b3
--- /dev/null
+++ b/.changeset/ten-cougars-live.md
@@ -0,0 +1,5 @@
+---
+'@antv/g-device-api': patch
+---
+
+Flip Y in renderpass in webgpu renderer.

From 89701181830f28b6472742608d8828792f5ea5a0 Mon Sep 17 00:00:00 2001
From: "github-actions[bot]"
 <41898282+github-actions[bot]@users.noreply.github.com>
Date: Fri, 17 Apr 2026 17:29:30 +0800
Subject: [PATCH 3/3] chore(release): bump version (#213)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
---
 .changeset/ten-cougars-live.md | 5 -----
 CHANGELOG.md                   | 6 ++++++
 package.json                   | 2 +-
 3 files changed, 7 insertions(+), 6 deletions(-)
 delete mode 100644 .changeset/ten-cougars-live.md

diff --git a/.changeset/ten-cougars-live.md b/.changeset/ten-cougars-live.md
deleted file mode 100644
index 64430b3..0000000
--- a/.changeset/ten-cougars-live.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-'@antv/g-device-api': patch
----
-
-Flip Y in renderpass in webgpu renderer.
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2b8d1e1..926ac65 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # @antv/g-device-api
 
+## 1.6.14
+
+### Patch Changes
+
+-   6d118ff: Flip Y in renderpass in webgpu renderer.
+
 ## 1.6.13
 
 ### Patch Changes
diff --git a/package.json b/package.json
index 4a4dba9..03fe305 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@antv/g-device-api",
-  "version": "1.6.13",
+  "version": "1.6.14",
   "description": "A Device API references WebGPU implementations",
   "keywords": [
     "antv",